Metazooplankton community structure, feeding rate estimates, and hydrography in a meltwater-influenced Greenlandic fjord
In order to assess the potential responses of Greenland's coastal ecosystems to future climate change, we studied the hydrography and distribution of metazooplankton, along a transect from the slope waters beyond Fyllas Banke to the inner part of Godthabsfjord, West Greenland, in July and Augus...
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ftwilliammarycol:oai:scholarworks.wm.edu:vimsarticles-1129 2024-06-23T07:50:50+00:00 Metazooplankton community structure, feeding rate estimates, and hydrography in a meltwater-influenced Greenlandic fjord Tang, Kam W. Nielsen, Torkel Gissel Munk, Peter Mortensen, John 2011-01-01T08:00:00Z application/pdf https://scholarworks.wm.edu/vimsarticles/130 https://doi.org/10.3354/meps09188 https://scholarworks.wm.edu/context/vimsarticles/article/1129/viewcontent/m434p077.pdf unknown W&M ScholarWorks https://scholarworks.wm.edu/vimsarticles/130 doi:10.3354/meps09188 https://scholarworks.wm.edu/context/vimsarticles/article/1129/viewcontent/m434p077.pdf VIMS Articles Glacial fjord Greenland Climate change Copepod Grazing Predation Food web Biological Sciences Peer-Reviewed Articles Marine Biology text 2011 ftwilliammarycol https://doi.org/10.3354/meps09188 2024-06-05T03:30:42Z In order to assess the potential responses of Greenland's coastal ecosystems to future climate change, we studied the hydrography and distribution of metazooplankton, along a transect from the slope waters beyond Fyllas Banke to the inner part of Godthabsfjord, West Greenland, in July and August 2008, and estimated feeding rates for some of the larger species groups. Within the 4 regional domains that were covered in the study (continental slope, continental shelf, outer sill region, and main fjord basin), salty coastal water and glacial runoff mixed to various extents, and 7 water masses with specific characteristics were identified. The common large copepod species were Calanus finmarchicus, C. glacialis, C. hyperboreus, and Metridia longa. Small copepod genera included Microsetella, Pseudocalanus, and Oithona, while rotifers and gastropods (primarily pteropods) were also found in high abundance. Species could be linked to the specific water masses, e.g. Calanus spp. were primarily associated with oceanic or coastal waters, whereas M. longa, Microsetella sp., Pseudocalanus sp., and rotifers were mostly found inside the fjord. The combined biomass of the large zooplankton species (5.5 x 10(3) mg C m(-2)) was less than that of the small species (6.8 x 10(3) mg C m(-2)) averaged across all sampled stations along the transect. Estimated in situ grazing rates for the large copepod species were < 10% of their maximum rates, indicating food limitation. The major predatory zooplankton groups, Pareuchaeta norvegica and chaetognaths, had estimated predation effects of < 1% d(-1) on the prey community. The dominance of small zooplankton species within the fjord contradicts the traditional emphasis on large, lipid-rich zooplankton species in the arctic seas, and suggests that the planktonic food web structure inside the glacial fjord was different from that of the system outside. Text Arctic Calanus finmarchicus Climate change Greenland greenlandic Zooplankton W&M ScholarWorks Arctic Greenland Marine Ecology Progress Series 434 77 90 |
institution |
Open Polar |
collection |
W&M ScholarWorks |
op_collection_id |
ftwilliammarycol |
language |
unknown |
topic |
Glacial fjord Greenland Climate change Copepod Grazing Predation Food web Biological Sciences Peer-Reviewed Articles Marine Biology |
spellingShingle |
Glacial fjord Greenland Climate change Copepod Grazing Predation Food web Biological Sciences Peer-Reviewed Articles Marine Biology Tang, Kam W. Nielsen, Torkel Gissel Munk, Peter Mortensen, John Metazooplankton community structure, feeding rate estimates, and hydrography in a meltwater-influenced Greenlandic fjord |
topic_facet |
Glacial fjord Greenland Climate change Copepod Grazing Predation Food web Biological Sciences Peer-Reviewed Articles Marine Biology |
description |
In order to assess the potential responses of Greenland's coastal ecosystems to future climate change, we studied the hydrography and distribution of metazooplankton, along a transect from the slope waters beyond Fyllas Banke to the inner part of Godthabsfjord, West Greenland, in July and August 2008, and estimated feeding rates for some of the larger species groups. Within the 4 regional domains that were covered in the study (continental slope, continental shelf, outer sill region, and main fjord basin), salty coastal water and glacial runoff mixed to various extents, and 7 water masses with specific characteristics were identified. The common large copepod species were Calanus finmarchicus, C. glacialis, C. hyperboreus, and Metridia longa. Small copepod genera included Microsetella, Pseudocalanus, and Oithona, while rotifers and gastropods (primarily pteropods) were also found in high abundance. Species could be linked to the specific water masses, e.g. Calanus spp. were primarily associated with oceanic or coastal waters, whereas M. longa, Microsetella sp., Pseudocalanus sp., and rotifers were mostly found inside the fjord. The combined biomass of the large zooplankton species (5.5 x 10(3) mg C m(-2)) was less than that of the small species (6.8 x 10(3) mg C m(-2)) averaged across all sampled stations along the transect. Estimated in situ grazing rates for the large copepod species were < 10% of their maximum rates, indicating food limitation. The major predatory zooplankton groups, Pareuchaeta norvegica and chaetognaths, had estimated predation effects of < 1% d(-1) on the prey community. The dominance of small zooplankton species within the fjord contradicts the traditional emphasis on large, lipid-rich zooplankton species in the arctic seas, and suggests that the planktonic food web structure inside the glacial fjord was different from that of the system outside. |
format |
Text |
author |
Tang, Kam W. Nielsen, Torkel Gissel Munk, Peter Mortensen, John |
author_facet |
Tang, Kam W. Nielsen, Torkel Gissel Munk, Peter Mortensen, John |
author_sort |
Tang, Kam W. |
title |
Metazooplankton community structure, feeding rate estimates, and hydrography in a meltwater-influenced Greenlandic fjord |
title_short |
Metazooplankton community structure, feeding rate estimates, and hydrography in a meltwater-influenced Greenlandic fjord |
title_full |
Metazooplankton community structure, feeding rate estimates, and hydrography in a meltwater-influenced Greenlandic fjord |
title_fullStr |
Metazooplankton community structure, feeding rate estimates, and hydrography in a meltwater-influenced Greenlandic fjord |
title_full_unstemmed |
Metazooplankton community structure, feeding rate estimates, and hydrography in a meltwater-influenced Greenlandic fjord |
title_sort |
metazooplankton community structure, feeding rate estimates, and hydrography in a meltwater-influenced greenlandic fjord |
publisher |
W&M ScholarWorks |
publishDate |
2011 |
url |
https://scholarworks.wm.edu/vimsarticles/130 https://doi.org/10.3354/meps09188 https://scholarworks.wm.edu/context/vimsarticles/article/1129/viewcontent/m434p077.pdf |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Calanus finmarchicus Climate change Greenland greenlandic Zooplankton |
genre_facet |
Arctic Calanus finmarchicus Climate change Greenland greenlandic Zooplankton |
op_source |
VIMS Articles |
op_relation |
https://scholarworks.wm.edu/vimsarticles/130 doi:10.3354/meps09188 https://scholarworks.wm.edu/context/vimsarticles/article/1129/viewcontent/m434p077.pdf |
op_doi |
https://doi.org/10.3354/meps09188 |
container_title |
Marine Ecology Progress Series |
container_volume |
434 |
container_start_page |
77 |
op_container_end_page |
90 |
_version_ |
1802641769933832192 |